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R. H. HAWKINS,1Depd, H. G. NEWTON, administrator.

SEWING MACHINE. l No. 316,26'3. Patented Apr. 2l, 1885.

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H. G. NEw'roN, administrator.

y SEWING MACHINE. No. 316,263. 5 Patentedv Apr. 21, 1885.

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NNE STATES 'ATENT Erice.

RORERT H. HAwiHNs, or NEW HAvEN, CONNECTICUT, HENRY c. NEWTON,y ADMINIsTRATOR OE sAID ROBERT H. HAwKINs, DECEAsED.

sewlNG-MACHINE.

SPECIPICATION forming part of Letters Patent No. 316,263, dated April 21, 1885.

Application led April ,24, 1882. (No model.) i

To @ZZ whom, it may concern:

Be it known that I, ROBERT HAwKINs, of New Haven, in the county of New Haven and State of Connecticut, have invented new Improvements in Sewing-lVIachines,- and I do hereby declare the following, when taken 'in connection with accompanying drawings and the letters of reference marked thereon, to le a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in-

Figure 1, a front view of so much ofthe machine as will illustrate the invention; Fig. 2, an under side view of the same; Fig.3, an end view,

g 5 looking toward the shuttle-race; Fig. 4, a sectional view of the race and shuttle-d river; Fig. 5, a perspective View of one shuttle detached; Fig. 6, a transverse section through the rockshaft D, showing the grooved arm J of the rock-shaft F and its connection with the rockshaft D; Fig. 7, an end view of the shuttle race and driver, showing the driver in its extreme rear working movement; Fig. 8, a side view of the arms J and K, showing the hinged wall of 2q the groove turned away to release the arm K;

Fig. 9, the same as Fig. 7, showing the additional movement ofthe driver when the groove J is opened.

This invention relates to an improvement in that class ofsewing-machines employing a vertically-reciprocating needle and an oscillating shuttle, the object of the invention being to adapt the machine to the working of two or more needles and corresponding shuttles bya single mechanism, and is specially adapted to the machine known as the Singer machine,77 the parts of which pertaining to this invention are shown in the accompanying illustrations; and the invention consists in the construction as hereinafter described, and more particularly recited in the claim.

A represents the needle-bar, to which a vertical reciprocating movement is imparted by the usual mechanism employed in sewingmachines of this class, too well known to require'illustration or description.

The head B of the needle-bar is constructed to receive two or more needles (here shown as two, c a,) parallel to each other and distant 5o from each other according to the distance required between two lines of stitches to be run,

the needles being common scwing-machine needles, both alike.

Upon the under side of the bed C the shuttle shaft D is arranged, in the vusual manner, in bearings E E. An oscillating movement is imparted to this shaftfrom the driving-shaft above through a rock-shaft, F, hung in bearings G G beneath the bed of the machine. The

connecting-rod H, from the eccentric on the 6o driving-shaft above, is attached to an arm, I, on the front side of the rock-shaft.

On the opposite side ofthe shaft is an arm, J, which engages a crank-like arm, K, on the l shaft D. The rocking or oscillating movement'of the shaft F is therefore communicated to the shaft D. The pin L onthe crank K works in a groove, J, in the arm J of the crank-shaft F, as seen in Fig. 6, and substan-v tially as in the Singer machine.

To the opposite end of the shaft D the shuttlc-driver M is attached so as to partake of the oscillating movement of the said shaft D. This shuttle-driver is substantially the sam'e as in the Singer machine, except as hereinafter described.

The shuttle employed is that known as the Singer oscillating shuttle.77

The shuttle-race is circular, concentric with the shaft D, as seen in Fig. 3. The one part, N, is made fast to the bed. The other part, O, is hinged to the part N, as at b, and so that the movable part 0 may be turned from the fixed part N, as seen in broken lines, Fig. 3. The two parts, when the race is closed, are secured together by a latch, P, or other suitable mechanism. The internal face of the shuttlerace is constructed with two grooves, d d, parallel with each other and in a plane at right angles to the axis of the shaftD. These grooves correspond in shape to the rib e on the back ofthe shuttle. (See Fig. 5.) This back ofthe shuttle is the segment of a circle corresponding to the interior of the shuttle-race and so as to follow the grooves d in the oscillation of 95 the shuttle-driver. The two grooves d d (see Fig. 4) support the two shuttles in theirproper relation to their respective needles, substantially as the one is usually supported, and so that the two work in planes parallel to the path of their respective needles.

Ll; The shuttle-driver M differs only from that IOC in the Singer machine in that it is extended, as seen in Fig. 4, to reach the second shuttle, the two shuttles being shown in said iigure in their proper position in the shuttle-race, and through the shuttle-driver are annular slots f f, through which the needles work in the same manner as inthe single slot of the driver in the Singer machine. In the Singer machine the bobbin is removable from the shuttle without taking the shuttle from its race; but where two shuttles are employed this cannot be done; hence the necessity of making the shuttle-race so as to open, in order that the inside shuttle or shuttles may be removed from the race to replace or adjust the bobbin.

In the ordinary working of the machine the shuttle-driver in the extreme rear positionthat is, the position which carries the shuttles to their extreme rear position, as seen in Fig. 7-will not free the shuttles so that they can be removed from the race when the part O is dropped, as seen in that iigure. 'Ihe eXtreme movement of the arm J, when the shuttledriver stands in this position, is seen in solid lines, Fig. 6. In order to give a farther movement of the shuttle-driver in the direction of the rear movement of the shuttles, the outer wall, It, of the groove J is constructed separate from the arm J, and hinged thereto, so that it may be turned to one side, as seen in Fig. S, leaving the crank-pin L exposed, and when so exposed the arm K may be turned outward, as seen in broken lines, Fig. 6, giving to the shuttle-driver a farther rear movement, and so that its heel will clear the shuttles, as seen in Fig. 9, and permit their removal from the race, or their introduction, as the case may be, and when introduced the arm K is returned to take the pin L into the slot.

lIhen the hinged wall R of the slot is returned, as seen in Figs. l, 2, and 6.

If more than two lines o f stitches are desired to be run, then as many needles are provided as lines of stitches are required, and shuttles accordingly. In such case the shuttie-race will be constructed with grooves corresponding to the number of shuttles, and the driver extended to embrace the several shuttles, and also provided with slots corresponding to the respective needles.

Sewing-machines have been constructed with two or more needles, whereby parallel lines of stitches are produced. Therefore no claim is herein broadly made to a sewing-niachine so constructed; but

In a sewing-machine, the combination of a needle-bar carrying two or more needles, a circular shuttle-race constructed with guides for two or more shuttles, a shuttle-driver, M, arranged upon a rock-shaft, D, concentric with the shuttle-race, the said shuttle-driver constructed with slots corresponding to the respective needles, two or more oscillating shuttles arranged in said race, the shuttle-race divded,one part stationary, the other hinged thereto, whereby said race may be opened. the rock-shaft D, provided with a crank, K,and the rock-shaft F, carrying the arm J, the said arm constructed with a groove to receive the crank-pin L, the outer wall of the said groove hinged to its arm, whereby said groove may be opened or closed, substantially 'as and for the purpose described.

ROBERT II. HAWKINS.

Witnesses:

H. C. WHITE, CHARLES K. BUSH. 

